Gas-mixer.



R.- BBRGFELD. GAS MIXER. APPLICATION FILED FEB. 24, 1913.

www@ m5, 1915 parrain ernrns rarer onirica ianiimotio reiterati), or BnRLiN, GERMANY, Assieme To'BnnLIN-ANHALTISCHE irascHiNnNBAU-AKTIENe-nsnttscnarr, or BERLIN, Geni/LAMY, a CORPORATION OF GERMANY.

GAS-MIXER.

for mixing within a gasometer the gas prio-4 duced in the manufacture of illuminating gas. The necessity for mixing the gas arises from thevariations in the speciiic vgravity of the gas produced, the gas obtained at the beginning of an operation being of a different gravity from that obtained at the Aend' of the operation, or when water gas is added to coal gas. The devices constructed heretofore do not however miX the gasysatisfactorily unless gas is withdrawn from" the holder or gasometer to the mains or place of consumption at thesame time that the filling of the gasometer takes place.

, ln large gas works there are always several gasoineters and often operating conditions will be such that after iillin a gasometer its contents will be stored or several days before being delivered to the mains. A

Owing to the body of gas within such gasometer being at rest, the lighter gases will become separatedA from the heavier ones, the light-weight .constituents collecting in the upper portion ofthe gasometer, while the heavy constituents sink to the bottom. If the contents of such a ga'someter is discharged into the mains after this separation has taken place, the heavier gas will pass out first, and after a while a lighter gas will `be fed to the place of consumption. Owing to the sensitiveness of modern gas burners, great drawbacks are experienced whenthe composition of the gas supplied from the mains is subject to variations.

According to my present invention, the difficulties pointed Vout above are overcome by mixing the gas in the gasometer with the aid of a blower, before feeding said gas to the mains. For this purpose I arrange between the inlet and the outlet of the gasometer, a blower of any suitable construction, with proper slides, dampers or valves, so that large quantities of gas may be withdrawn by said blower from the main chain ber of the gasometer and immediately re-,.

Specification of Letters Patent.

4the gasometer bell.

o ughly mixed with the lighter' gas. 'order that the heavier gas Vmay .at first be rammen aan. a, raie.

Application filed February 2e, 1913. Serial No, 750,138.

lthe gas generating plant and with the distributing mains are shut off.

In order that the agitation or whirling motion'which the blower imparts to the gas may produce a thorough mixture it is im` portant that the blower project the gas into vthe gasometer with a velocity sufficient toblow the gas upward as far as the top of lWhen the blower is started, it will first withdraw the heavier gas which has accumulated" at the bottom of the generator, so that the heaviervpoition of the gas'will be forced back under the top of the gasometer, and after becoming distributed immediately below said top, the heavier gas will graduallysink within the gasometer, thus getting thorwithdrawn alone, the inlet of the suction pipe of the blower is arranged directly above the water level of the gasometer tank,

while the delivery pipe of the blower terminates at a materially higher level than the suction pipe.' lith this arrangement, the gas jet discharged from the blower will strike and whirl only the upper layers of the gas contained in the gas'orneter, while the heavieigas at the lower portion of the gasometer will not be disturbed or carried along by the gas jet and will therefore fiow evenly to the blower.

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, A specific embodiment of my invention is shown in the accompanying drawing, in which- Figure l is a vertical section of a gasometer, showing in elevation a blower ar ranged to withdraw gas from the gasometer. and to force it back into such gasometer; and Fig. 2 is a corresponding plan view, with the gasometer bell omitted.

The gasoineter represented in the drawing consists of a tank l filled with water and a vertically-movable bell 2. Gas from the retorts or producing plant is fed to the gas space of the gasometer (interior of `the bell 2) throughthesupply pipe 3, while the delivery pipe 4 is adapted to convey the gas from said space to the distributing mains. Suitable shut-o devices, such as the valves 5, 6 are provided. to enable the interior of the gasometer to be disconnected from the producing' plant and from the distributing mains, so that no additional gas from the producing plant may enter the v ling device 7 with the interior of the gasomi gasometer, nor any gas .i1-lowv to the said' mams. In a connection extendingfrom the pipe 4 to the pipe 3 I provide a blower4A 7,

or other impelling device, driven by power' in any suitable manner and having its connection with thepipes 3 vand @Lcontrolled by suitable shut-offA devices, such as the4 Y. tion as to allowgas to pass into the gasometer from the producing plant, while the valves 9 andt generally are in such a position as to permit the'passage of gas from the gasometer to the vdistributing mains. If it be desired to mix the gas contained in the gasometer (as is desirable when such gas has not been drawn from for some time) the valves 5 and 6 are closed so that no fresh gasl may reach the gasometer, -and so that no gas may pass from the gasometer to the distributing mains. The valves 8 and 9 are lopened so as to connect the blower or impel- F eter, and the said device is set in operation. n Thiswill at vfirst withdraw the heavyl gas contained in the lower-:portion of the bell 2, through the pipe 4 which is connected with the suction port of the impelling device 7, andthe latter will force said gas back into v the gasometer at a'high velocity through .the pipe 3 connected with the delivery port of said device. The gas, is discharged upward vertically and impinges, against the lower surface of the top -10, thereupon spreading out laterally and gradually sink- 'ing t'o-the lower portion of the gas space.

After this operation has been continued for a short time, the entire body of gas confined in theV gasometer will have been mixed thoroughly so as to be of the proper uniform composition. The impelling device may then be stopped andv\the'valves v8 and 9- closed. Upon opening the valve 6 the homogeneous gas may pass from the gasometer to the distributing mains. A

It will be evident that the operation of my invention' is notdependent upon connecting the impelling device with the gas supply pipe 3 and with the gas delivery pipe l., since theY suctionv port and thel delivery port of the impelling device may be connected with the gas space of the gasometer in .other ways. l A.

Various modifications may be made Without departing from the nature of'my invention as set forth in the appended claims.

I claim:

l. The combination, with a storage `gasometer having a vertically-movablebell of 'an impelling device'having a suction conby gas mayl be withdrawn from the interior of the movablel bell and forced backinto it for' the purpose of mixing gases of different I specific gravities.

2. The combination, ywith a storage gasometer having a vertically-movable. bell, of an impelling'device having a suction con- `nection and a delivery connection'both connected with the interior of said bell, the outlet end of Athe delivery connection being 'at a.

higher level' than the intake end of the suction connection.

3. The combinationwith a storage gas-v ometer comprising a vertically movable bell and having a gas supply pipe and a gas de- "livery pipe both connected with the interior of said bell, of an impelling device having a suction .connection .with one of said pipes and a delivery connection with-the other pipe, and shut-ott devices controlling said connections.

et. The combination, with an expansible receptacle for the storage of gas, of an impelling devicehaving a suction connection and a delivery connection both connected with thegas space-of said receptacle, whereby gas may be withdrawn fromthe interior y of said storage receptacle and forced hackA intoJ-it for the purpose of mixing gases Iof different specific gravities.

The combination, withA an expansible receptacle for the storage of gas, of an im- Apelling device having a suction connection and a delivery connection both connected with the gas space of. said receptacle, ,the outlet end of the delivery connection being lat a high-er level than the'intalre end o f the suction 'connection within vthe said storage.

receptacle.

6. The combination, withy an eXpansiloleA ply pipe',l ywithin the receptacle, being at a` higher level than the intake end of the said I delivery pipe, of an `impelling device hav- 4ing a suction connection with said delivery pipe, and a delivery connection with said supply pipe, and shut-od devices controlling said connections. ,y

In testimony whereof, I have signed this specification-in the ing Witnesses.

REINHOLD BERGFELD. Vlitnesses:4 HENRY HASPER,

y WOLDEMAR- HAUPT.

presence of two subscrib- 

